Electron-dense club-shaped, tubular or saccular organelles, extending back from the anterior end of sporozoites and other stages of certain sporozoans in the subphylum Apicomplexa. SYN: paired organelles, toxoneme. [G. rhopalon, club]

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rhop·try (rōpґtre) [Gr. rhopalon club] in apicomplexan protozoa, either of two electron-dense, paired, tubular, saccular, or club-shaped organelles that arise anteriorly, extend toward the posterior end of the body of the organism, and form part of the apical complex. Called also toxoneme.

Medical dictionary. 2011.

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